It is impossible to get a Tommy gun is San Andreas, unless you use a mod on the PC version.
mods
no
gun shops called; Amunation. labbeled with a gun icon on the map
There are many cheat codes for San Andreas, but no "game passwords." Some helpful cheat codes include: Six Star Wanted Level - BRINGITON, Infinite Ammo without Reloading - FULLCLIP, and Hitman in all weapons - PROFESSIONALKILLER.
Yes although they come in tiers as it is impossible to have all weapons on your person at one time. you can find them with a simple google search of gta san andreas cheats for your platform.
first point the gun at them then press up they will he will join u then.u can make them stop(down)or go up
its at pilot acadamy
Hold W and S simultaneously while you rotate right or left with your arrow keys.
How to get high gravity in cheat
well you could steal it from a old man if you see a old man coming with a cane kill him and steal it you can also find it in blueberry behind the gun store
level
there is none, please for the love of waffle, please spread the word that most all of guns and weapons you can't get by cheating wo/ mods are mods, and that all gta games don't have real advertisers, so no portal gun or no dodge viper or so on. Please keep in mind and spread word.